For those who have tuned in lately, NJ Conserve Wildlife Biologists has been witnessing what is likely a territorial dispute, which is when a rival adult is attempting to take over the nest. They have seen this when the female calls and leaves her nest to defend her territory. This happened yesterday and again this morning.
The male has also been heard calling alongside his mate. They are not sure if it is a male or female who is attempting the takeover, but 2019 the previous female was replaced by this unbanded female (Frida). We are seeing this occur more and more at established nests as they are desirable to breeding age adults, which there are more of these days than in past years.
It is hard to capture on camera but we may see a glimpse of a passing falcon on the wing. Behavior of adults is how we can tell what is going on and having audio really helps when they are not visible on camera. Time will tell if any turnover will occur here.